root@t2080rdb:/# helpGNU bash, version 4.3.39(1)-release (powerpc-fsl-linux-gnu)These shell commands are defined internally. Type `help' to see this list.Type `help name' to find out more about the function `name'.Use `info bash' to find out more about the shell in general.Use `man -k' or `info' to find out more about commands not in this list.